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Stellar and Planetary Characterization of the Ross 128 Exoplanetary System from APOGEE Spectra
Astrophysical Journal Letters
The first detailed chemical abundance analysis of the M dwarf (M4.0) exoplanet-hosting star Ross 128 is presented here, based upon near-infrared (1.5--1.7 ) high-resolution (R∼22,500) spectra from the SDSS-APOGEE survey. We determined precise atmospheric parameters T_ eff=3231±100K, logg=4.96±0.11 dex and chemical abundances of eight elements (C, O, Mg, Al, K, Ca, Ti, and Fe), finding Ross 128 to have near solar metallicity ([Fe/H] = +0.03±0.09 dex). The derived results were obtained viadoi:10.3847/2041-8213/aac896 fatcat:yaovkhatsjgs7pfqhm7vlbwtpi